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Original Linen Interlocking Diagrams
from
The General Railway Signal Company
photo courtesy of Zachary Gillihan photo courtesy of Zachary Gillihan
General Railway Signal Company
N.Y.C. R.R.
Tower 25

July-26-1918		 General Railway Signal Company
Penn. R.R.
Cadwalader "CA" Tower

April-26-1916
photo courtesy of Zachary Gillihan photo courtesy of Zachary Gillihan
General Railway Signal Company
Oregon & Washington R.R.
Electric Interlocking Plan at Spokane WA.

December-7-1912		 General Railway Signal Company
L.V. R.R.
Scott St., Buffalo, N.Y.

March-21-1916
photo courtesy of Zachary Gillihan photo courtesy of Zachary Gillihan
General Railway Signal Company
Slades Ferry 23552
Track and Signal Plan
N.Y.N.H. & H.Ry.

May-22-1901		 General Railway Signal Company
Third & Front St. Cincinnati
Track and Signal Plan
C.N.O.&T.P. R.R.

Jan-19-1914
photo courtesy of Zachary Gillihan photo courtesy of Zachary Gillihan
General Railway Signal Company
Dundas, Ohio
Locking Sheet, Dog Chart and Arrangement
Plan for 5 Lever Table Interlocker.
B. & O. R.R. Co.

Sept-22-1936		 General Railway Signal Company
Musselman, Ohio
Locking Sheet, Dog Chart and Arrangement
Plan for 5 Lever Table Interlocker.

Nov-12-1936
photo courtesy of Zachary Gillihan photo courtesy of Zachary Gillihan
General Railway Signal Company
Frenchtown "FN"
Track Plan, Locking Sheet & Dog Chart
Penn. R.R.

April-10-1916		 General Railway Signal Company
Toronto, Ont.
Track Plan, Locking Sheet & Dog Chart
Toronto Suburban Railway

Feb-7-1910
photo courtesy of Zachary Gillihan
General Railway Signal Company
Copy From Original Linen
East Buffalo, NY
Dog Chart
D. L. & W. R.R.

Oct-22-1909